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Editorial Team
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Asked: 2026-05-13T10:40:39+00:00

I have a datatable with 4 columns A, B, C and D such that

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I have a datatable with 4 columns A, B, C and D such that a particular combination of values for column A, B and C is unique in the datatable.

Objective: To find the value of column D, for a given combination of values for column A, B and C.

I guess looping over the set of data rows should do it. Is there a way to use Datatable.Select() to accomplish this? To be more specific – can I have multiple conditions in the select filter i.e. a logical AND operator connecting conditions for each of the columns A, B and C.

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1 Answer

  1. Editorial Team

    Yes, the DataTable.Select method supports boolean operators in the same way that you would use them in a “real” SQL statement:

    DataRow[] results = table.Select("A = 'foo' AND B = 'bar' AND C = 'baz'");

    See DataColumn.Expression in MSDN for the syntax supported by DataTable’s Select method.

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